var a = {
    name:'冯志伦'
}
a.age = 18
a['learn'] 
= function () {
    console.log("study")
}
// console.log(a.learn(z)) 
var b = new Object()
b.name = 'fengzhilun'
b.age = 18
b.study = function (params) {
    console.log(params)
    log
}
// console.log(b);
var c = function (params) {
    let a = {}
    a.name ="feng"
    a.age = 18
    return a ;
}
console. log(c())